Mechanical Ventilatory Support

Question 1

Indications for MV

Answer 1

Acute respiratory failure

hypoxemic/hypercarbic

Question 2

Most widely used mode of ventilation and used for initiation of mech vent

Answer 2

Assist Control Ventilation (ACMV)

Question 3

Ensures backup minute ventilation in the absence of an intact respiratory drive and allows synchronization pf the ventilator cycle with the patient’s inspiratory effort

Answer 3

ACMV

Question 4

Set number of mandatory breaths of fixed volume to be delivered by the vent

Answer 4

Intermittent Mandatory Ventilation (IMV)

Question 5

Allows parients with an intact respiratory drive to exercise inspiratory muscles between assisted breaths

Answer 5

IMV

Question 6

Patient-triggered, flow-cycled, pressure-limited

Answer 6

Pressure-support ventilation (PSV)

Question 7

Preferred ventilation to regulate peak airway pressure (esp in barotrauma, postoperative thoracic surgeries)

Answer 7

Pressure-Control Ventilation

Question 8

Increases inspiratory time

Decreases expiratory time

Answer 8

Inverse ratio ventilation

Question 9

Common organisms with high risk for VAP

Answer 9

Pseudomonas
Enteric gram-negative rods
Staph aureus

Question 10

Causes of hypotension in patients with mech vent

Answer 10

Increased intrathoracic pressures with decreased venous return

Question 11

Adequate gas exchange

Answer 11

Low PEEP/FIO2 <8cmH2O

FIO <0.5